the study was published in the authority of journal science. is this more ammunition for the climate change crowd to stick it to was with a carbon tax? gerri: that is exactly what they are going to try to do. i think it is a lousy idea. a couple of numbers here. we are not the problem here. it is not the u.s. that is the problem. our emissions have fallen by 1.7% over the last decade. china up 123%. all of these developing countries are pushing out carbon emissions. it is not us. we are declining at this level. to think we need a tax to change what is going on what is happening the american people are already beyond it, already making the choices that save -- stuart: this is a forte of force. liz: i know that the glaciers are melting. i have seen them in alaska. john mccain and lindsey graham, conservatives, said the glaciers are melting. is it due to warming notion or warming atmosphere, do we need a methane can trade system because methane is worse than carbon? some scientists said. a very controversial subject that gets heated reaction in me